multifocal lens

Since 2004, ReSTOR multifocal lens is used in Germany - but at first only a few selected and specially trained doctors and under recording of the visual results obtained for the collection of scientific study data. In September 2005, the ReSTOR lens with blue light filter after completion of the necessary studies by the U.S. FDA approved and will now be made available to all patients in Germany.

Traditional multifocal either based on the principle of light refraction or the light diffraction. While bent on the refraction of light rays as they pass a smooth, continuous lens at a fixed focal point, the diffractive opctic works on small circular stage on the lens surface, the distance to the edge of the lens is getting narrower. At these levels, the incoming light is bent - just like water waves, which hit an obstacle. At the points at which the resulting light waves again, are extremely sharp images - that several areas of sharp vision.

The ReSTOR technology combines first refractive and diffractive optics areas and optimizes the quality of vision beyond the so-called apodization. Apodization means towards the micro, gradual decrease of the diffractive step height to the edge of the lens - this creates a smooth transition between local and distance objects and reduces unwanted light sensations to a minimum.